Siemens SENTRON PAC4200 Manual page 55

Connection
4.1 Safety information
NOTICE
Grounding of current transformers optional
The connection of the transformers and thus also the grounding of the transformers on the
secondary side must always be carried out according to the applicable regulations.
Grounding of the current transformers on the secondary side is not necessary for use in
low-voltage switchboards for performing measuring tasks.
Note
Only qualified personnel are permitted to install, commission or service this device.
• Wear the prescribed protective clothing. Observe the general equipment regulations and
safety regulations for working with high-voltage installations (e.g. DIN VDE, NFPA 70E as
well as national or international regulations).
• The limits given in the technical data must not be exceeded even during commissioning
or testing.
• The secondary connections of intermediate current transformers must be short-circuited
at the transformers before the power supply lines to the device are interrupted.
• The polarity and phase assignment of the instrument transformers must be tested.
• Before connecting the device, check that the system voltage matches the voltage
specified on the rating plate.
• Check that all connections are correctly made before startup.
• Before power is applied to the device for the first time, it must have been located in the
operating area for at least two hours in order to reach temperature balance and avoid
humidity and condensation.
• Condensation on the device is not permissible during operation.
See also
Applying the measuring voltage (Page 71)
Applying the measuring current (Page 72)
Applying the supply voltage (Page 68)
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System Manual, 05/2019, A5E02316180B-05
PAC4200